Cutaneous T-cell lymphoma, unsp, lymph nodes mult site

This diagnosis code signifies a form of cutaneous T-cell lymphoma where the specific type of CTCL is not documented, but the disease has spread to or originated in lymph nodes located in multiple, non-contiguous anatomical regions. It indicates a systemic involvement of the lymphatic system by an unspecified cutaneous T-cell malignancy.

Use this code when documentation confirms a diagnosis of cutaneous T-cell lymphoma, but the specific subtype (e.g., Mycosis Fungoides, Sezary Syndrome) is not specified. The medical record must explicitly state involvement of lymph nodes in more than one distinct anatomical site (e.g., cervical and inguinal lymph nodes).

• Ensure the documentation clearly states "unspecified" cutaneous T-cell lymphoma and involvement of "multiple sites" for lymph nodes.
• Do not use this code if a specific subtype of CTCL is identified; instead, use the appropriate specific code (e.g., C84.0- for Mycosis Fungoides).
• Verify that the lymph node involvement is truly in multiple, distinct anatomical regions, not just multiple nodes within a single region.